Re: [Gimp-user] Creating Transparent Text

2013-02-20 Thread Johan Vromans
Steve Kinney ad...@pilobilus.net writes:

 If possible I would start over with a new signature and scan, at 300
 DPI or above, with black ink on white paper.

Scan in 'Lineart' settings, so you don't have shades of grey.

In the Gimp, set the mode to Color and proceed:

 Then, applying the filter Colors  Color to Alpha would produce a much
 more acceptable result. The more uniform the color and texture of the
 paper (or etc.) used, the more certain the result.

When downscaling the result, you'll get nice anti-aliasing based
on transparency. 

-- Johan
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Re: [Gimp-user] Creating Transparent Text

2013-02-20 Thread Myke C. Subs

  
  

  On 02/16/2013 11:16 AM, Denise Hamilton wrote:

  
I am working on a webpage to sell my photography. I am trying to
create text with my copyright information on the photos so that they
cannot be copied (pirated). 

I have read the GIMP documentation and experimented with adding text
to the photo. I cannot find how to make the text visible but not
solid. I do not want it to impact the viewing of the photos.

Someone once told me I needed to create a "mask" to do this or a
custom brush.  Someone here on the gimp-user list said i could do it
just with the text tool.

Any help you can offer will be appreciated.

  
  Last summer I made an effort to explore various watermark techniques
which were doable using The GIMP.

The most fascinating method I found was explained in one particular web
tutorial which I am sure I bookmarked, saved to my hard drive, or both
and will simply need to relocate in order to point you to it if you'd
like to pursue it.

The basic idea is to create and save in your ".gimp-2.x" directory a
tiled pattern file (i.e. "filename.pat") which contains the text of your
copyright notice and/or anything else you want your watermark to
contain.  I believe the text was opaque and white on a transparent
background.

You then load into The GIMP an image you wish to watermark.  Add a
transparent layer above it and "flood fill" that layer with your white
watermark pattern.

Then you perform a couple of funky image tricks on it before turning the
opacity of the watermark layer down to almost but not quite zero.  At
that point it becomes virtually invisible and most people will never
know it's there.

Then to reveal the watermark should you ever need to prove the image is
yours in a court of law or whatever...  Just load into The GIMP both
your unwatermarked original and the watermarked copy as two separate layers.

Then change the layer mode of the upper layer to "Grain Extract" or
whatever it is - I cannot right now remember.  The parts which are
common to both images will be opaque gray but the parts which are
different (i.e. the watermark itself) will become clearly visible.

This technique survives pretty much every known technique intended to
defeat watermarking.  I was very impressed with the idea of it.

Myke



  

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Re: [Gimp-user] Creating Transparent Text

2013-02-20 Thread Myke C. Subs
On 02/16/2013 11:16 AM, Denise Hamilton wrote:
 I am working on a webpage to sell my photography. I am trying to
 create text with my copyright information on the photos so that they
 cannot be copied (pirated). 

 I have read the GIMP documentation and experimented with adding text
 to the photo. I cannot find how to make the text visible but not
 solid. I do not want it to impact the viewing of the photos.

 Someone once told me I needed to create a mask to do this or a
 custom brush.  Someone here on the gimp-user list said i could do it
 just with the text tool.

 Any help you can offer will be appreciated.

This looks to be the watermark tutorial page to which I referred in my
previous post.

http://www.gimpdome.com/gimp-general-use/hidden-watermarks-in-gimp

There's a little extra work required to do it - and a few practice runs
of concealing and revealing the watermark will be in order before you
master it, but I can't think of a better, less visually intrusive way of
watermarking images than this.

Myke

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Re: [Gimp-user] Creating Transparent Text

2013-02-20 Thread Partha Bagchi
You could try this:

http://farbspiel-photo.com/learn/hdr-cookbook/creative-watermarking

It was posted on Flickr gimpuser group. The question would be convert to
some sort of script for Gimp...



On Wed, Feb 20, 2013 at 5:27 AM, Myke C. Subs s...@mykec.net wrote:

 On 02/16/2013 11:16 AM, Denise Hamilton wrote:
  I am working on a webpage to sell my photography. I am trying to
  create text with my copyright information on the photos so that they
  cannot be copied (pirated).
 
  I have read the GIMP documentation and experimented with adding text
  to the photo. I cannot find how to make the text visible but not
  solid. I do not want it to impact the viewing of the photos.
 
  Someone once told me I needed to create a mask to do this or a
  custom brush.  Someone here on the gimp-user list said i could do it
  just with the text tool.
 
  Any help you can offer will be appreciated.

 This looks to be the watermark tutorial page to which I referred in my
 previous post.

 http://www.gimpdome.com/gimp-general-use/hidden-watermarks-in-gimp

 There's a little extra work required to do it - and a few practice runs
 of concealing and revealing the watermark will be in order before you
 master it, but I can't think of a better, less visually intrusive way of
 watermarking images than this.

 Myke

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[Gimp-user] Creating Transparent Text

2013-02-19 Thread Helen
I apologize if this goes out twice. I believe my first effort bounced.


On Sat, Feb 16, 2013 at 11:42 AM, Liam R E Quin l...@holoweb.net wrote:


 It's usually better just to have an opaque signature: it's harder to
 remove and can become a part of the artwork.


Browsing and reading this I'm reminded of my problem w/signature brush.
Several
years ago, I made a brush by signing my name in black ink onto a white
paper and
scanning that paper.  I use it unobtrusively in bottom right corner when I
print photos
to frame for gallery showings.  The problem is this:  I can't remember how
I made the
background transparent.   I have about 12 sig brushes which are no good
because
with all of them, I used an eraser to get the white background off --
messy.  I know there is
a good method of doing this -- I did it years ago -- but I've tried many
times over many
months, and can't recall how I made the signature black with transparent
background.
Does my question make sense?  How is that done?  (The brush I made
successfully
has my name with 2008, and I just erase the date every time I use it, but
I'd like to
know how to do it again and do it right.)

-- 
Helen Etters
using Linux, suse 12
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Re: [Gimp-user] Creating Transparent Text

2013-02-19 Thread Gunold Brunbauer

Am 19.02.2013 17:33, schrieb Helen:

I apologize if this goes out twice. I believe my first effort bounced.


On Sat, Feb 16, 2013 at 11:42 AM, Liam R E Quin l...@holoweb.net 
mailto:l...@holoweb.net wrote:



It's usually better just to have an opaque signature: it's harder to
remove and can become a part of the artwork.


Browsing and reading this I'm reminded of my problem w/signature 
brush.   Several
years ago, I made a brush by signing my name in black ink onto a white 
paper and
scanning that paper.  I use it unobtrusively in bottom right corner 
when I print photos
to frame for gallery showings.  The problem is this:  I can't remember 
how I made the
background transparent.   I have about 12 sig brushes which are no 
good because
with all of them, I used an eraser to get the white background off -- 
messy.  I know there is
a good method of doing this -- I did it years ago -- but I've tried 
many times over many
months, and can't recall how I made the signature black with 
transparent background.
Does my question make sense?  How is that done?  (The brush I made 
successfully
has my name with 2008, and I just erase the date every time I use it, 
but I'd like to

know how to do it again and do it right.)

--
Helen Etters
using Linux, suse 12


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Color - Color to Transparency

Gunold

(Did you see this: http://www.youtube.com/watch?v=50sAOfg8hnU )
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Re: [Gimp-user] Creating Transparent Text

2013-02-19 Thread Steve Kinney
On 02/19/2013 11:56 AM, Gunold Brunbauer wrote:

 Color - Color to Transparency

a.k.a. Colors  Color to Alpha

:o)



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Re: [Gimp-user] Creating Transparent Text

2013-02-19 Thread Helen
I guess I need more detail.  I've done this, and I'm attaching the
result.  In case attachments aren't allowed, or you can't see it,
 I'll tell you that there is messy white space all the way around the sig.
The steps I took were to open the scanned sig, copy, paste as brush, and
then used it to sign a pix.  White mess all around.
Thanks for any help - I think I  just need more detail.

On Tue, Feb 19, 2013 at 12:11 PM, Steve Kinney ad...@pilobilus.net wrote:

 On 02/19/2013 11:56 AM, Gunold Brunbauer wrote:

  Color - Color to Transparency

 a.k.a. Colors  Color to Alpha

 :o)



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-- 
Helen Etters
using Linux, suse11.4


sig13.xcf
Description: Binary data
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Re: [Gimp-user] Creating Transparent Text

2013-02-19 Thread Helen
Sorry!!!   I can't see to do this in one mailing!   I did
do the color - color to alpha before I did the
copy/paste as brush.  Thanks for your patience.

On Tue, Feb 19, 2013 at 12:22 PM, Helen etter...@gmail.com wrote:

 I guess I need more detail.  I've done this, and I'm attaching the
 result.  In case attachments aren't allowed, or you can't see it,
  I'll tell you that there is messy white space all the way around the sig.
 The steps I took were to open the scanned sig, copy, paste as brush, and
 then used it to sign a pix.  White mess all around.
 Thanks for any help - I think I  just need more detail.

 On Tue, Feb 19, 2013 at 12:11 PM, Steve Kinney ad...@pilobilus.netwrote:

 On 02/19/2013 11:56 AM, Gunold Brunbauer wrote:

  Color - Color to Transparency

 a.k.a. Colors  Color to Alpha

 :o)



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 using Linux, suse11.4




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using Linux, suse11.4
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Re: [Gimp-user] Creating Transparent Text

2013-02-19 Thread Tobias Lunte
I've created a quick screencap. Hopefully, this will clear any 
misunderstandings.

http://www.youtube.com/watch?v=OXKPKMiUko8

bw,
Tobias Lunte//Tobl



Am 19.02.2013 18:22, schrieb Helen:

I guess I need more detail.  I've done this, and I'm attaching the
result.  In case attachments aren't allowed, or you can't see it,
 I'll tell you that there is messy white space all the way around the sig.
The steps I took were to open the scanned sig, copy, paste as brush, and
then used it to sign a pix.  White mess all around.
Thanks for any help - I think I  just need more detail.

On Tue, Feb 19, 2013 at 12:11 PM, Steve Kinney ad...@pilobilus.net 
mailto:ad...@pilobilus.net wrote:


On 02/19/2013 11:56 AM, Gunold Brunbauer wrote:

 Color - Color to Transparency

a.k.a. Colors  Color to Alpha

:o)



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using Linux, suse11.4


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Re: [Gimp-user] Creating Transparent Text

2013-02-19 Thread Steve Kinney
On 02/19/2013 01:37 PM, Burnie West wrote:

 It looks to me like the original signature scan had the artifacts
 around it.

Same here - and very low resolution.  The signature itself is only
64 x 142 pixels, and the artifacts look like they could have come
from scaling an earlier copy in an indexed format.

If possible I would start over with a new signature and scan, at 300
DPI or above, with black ink on white paper.  Then, applying the
filter Colors  Color to Alpha would produce a much more acceptable
result.  The more uniform the color and texture of the paper (or
etc.) used, the more certain the result.

Or you could go in a whole other direction, make a vector path from
the available signature, stroke it with an oblong brush with its
angle and hardness tweaked, and use the result.  This would be a
typical part of creating a logo from a signature.  Just for an
exercise, I did that:

http://pilobilus.net/xfer/helen.zip

Picture worth way more than a thousand words.

:o)

Steve





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Re: [Gimp-user] Creating Transparent Text

2013-02-19 Thread Helen
Thank you!   I'm going through it now.   Open Source users are such a
generous lot!
Thanks

On Tue, Feb 19, 2013 at 2:00 PM, Tobias Lunte tobias.lu...@hfg-gmuend.dewrote:

  I've created a quick screencap. Hopefully, this will clear any
 misunderstandings.
 http://www.youtube.com/watch?v=OXKPKMiUko8

 bw,
 Tobias Lunte//Tobl



 Am 19.02.2013 18:22, schrieb Helen:

 I guess I need more detail.  I've done this, and I'm attaching the
 result.  In case attachments aren't allowed, or you can't see it,
  I'll tell you that there is messy white space all the way around the sig.
 The steps I took were to open the scanned sig, copy, paste as brush, and
 then used it to sign a pix.  White mess all around.
 Thanks for any help - I think I  just need more detail.

 On Tue, Feb 19, 2013 at 12:11 PM, Steve Kinney ad...@pilobilus.netwrote:

 On 02/19/2013 11:56 AM, Gunold Brunbauer wrote:

  Color - Color to Transparency

 a.k.a. Colors  Color to Alpha

 :o)



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 using Linux, suse11.4


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Re: [Gimp-user] Creating Transparent Text

2013-02-19 Thread Helen
Wow!   I've never done a vector path, but what you did is so clear and
clean that I only wish I
had not cropped off my last name before sending the file!  Is vector path a
gimp tool?  I'll look it up.
Something new to learn.   Thank you!

Helen


On Tue, Feb 19, 2013 at 3:25 PM, Steve Kinney ad...@pilobilus.net wrote:

 On 02/19/2013 01:37 PM, Burnie West wrote:

  It looks to me like the original signature scan had the artifacts
  around it.

 Same here - and very low resolution.  The signature itself is only
 64 x 142 pixels, and the artifacts look like they could have come
 from scaling an earlier copy in an indexed format.

 If possible I would start over with a new signature and scan, at 300
 DPI or above, with black ink on white paper.  Then, applying the
 filter Colors  Color to Alpha would produce a much more acceptable
 result.  The more uniform the color and texture of the paper (or
 etc.) used, the more certain the result.

 Or you could go in a whole other direction, make a vector path from
 the available signature, stroke it with an oblong brush with its
 angle and hardness tweaked, and use the result.  This would be a
 typical part of creating a logo from a signature.  Just for an
 exercise, I did that:

 http://pilobilus.net/xfer/helen.zip

 Picture worth way more than a thousand words.

 :o)

 Steve





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Re: [Gimp-user] Creating Transparent Text

2013-02-19 Thread Steve Kinney
On 02/19/2013 04:26 PM, Helen wrote:
 Wow!   I've never done a vector path, but what you did is so clear
 and clean that I only wish I
 had not cropped off my last name before sending the file!  Is vector
 path a gimp tool?  I'll look it up.
 Something new to learn.   Thank you!

I was looking for excuses to do exercises with the GIMP, part of
getting used to the new interface.  Among the many improvements in
2.8, nodes and paths - in both the Lasso a.k.a. Free Select tool,
and the Path drawing tool, are easier to SEE against the background
of the image on canvas.  Yay!

The Paths Tool in the GIMP is its built in vector drawing tool.  The
toolbox button that turns it on looks like a pen nib.  There is also
a dockable dialog for managing paths, where they are handled in a
way similar to Layers.  This dock includes push button commands to
convert selections to paths, paths to selections, and has the
stroke tool for painting along paths - using the current brush, or
as a line with adjustable options.

Making paths in the GIMP is a portable skill:  The same type of
editing interface - bezier curves - is also found in full time
vector editors like Inkscape, and in CAD programs.  Drawing with
nodes and handles has a moderate learning curve, but I think it's
well worth the effort.  The signature took just a few minutes to
make, using the sample provided as a guide.

I went looking for tutorials to point at, but came up mostly empty.
 Grokking The GIMP, where I learned the basics, is getting very
obsolete - the Paths dock dialog and etc. have changed a lot since
it was written for GIMP 1.x.  With that caveat:

http://gimp-savvy.com/BOOK/index.html?node36.html

(See Subsection 3.1.1.4 Bezier Paths)

This video provides a run through with GIMP 2.8 that should get
anybody well started on their own experimentation with GIMP curves.
 Major clue:  To adjust node handles symmetrically, hold down the
shift key!  Otherwise they move independently.

http://jimmac.musichall.cz/demos/gimp/paths-tool2.avi

Note:  I don't know why this video shows the use of Transform tools
on the canvas; you can't Transform vector paths in the GIMP, as far
as I know.  To make sense of the cube part, see:

http://www.gimp.org/tutorials/Drawing_Shapes/

:o)

Steve



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[Gimp-user] Creating Transparent Text

2013-02-16 Thread Denise Hamilton
I am working on a webpage to sell my photography. I am trying to create
text with my copyright information on the photos so that they cannot be
copied (pirated).

I have read the GIMP documentation and experimented with adding text to the
photo. I cannot find how to make the text visible but not solid. I do not
want it to impact the viewing of the photos.

Someone once told me I needed to create a mask to do this or a custom
brush.  Someone here on the gimp-user list said i could do it just with the
text tool.

Any help you can offer will be appreciated.
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Re: [Gimp-user] Creating Transparent Text

2013-02-16 Thread Michael Schumacher
On 16.02.2013 17:16, Denise Hamilton wrote:

 I have read the GIMP documentation and experimented with adding text to
 the photo. I cannot find how to make the text visible but not solid.

Lower the opacity of the text layer in the layers dock.

http://docs.gimp.org/2.8/en/gimp-dialogs-structure.html#gimp-layer-dialog


-- 
Regards,
Michael
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